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"Whenever liquid reaches the bottom of the short leg on the siphon inside the cup, the liquid is discharged out of the bottom of the siphon. Discharge continues until the liquid level drops below the short leg of the siphon." —Quackenbos 1859

Tantalus's Cup

"Whenever liquid reaches the bottom of the short leg on the siphon inside the cup, the liquid is discharged…

"As he sang these tender strains, the very ghosts shed tears. Tantalus, in spite of his thirst, stopped for a moment his efforts for water, Ixion's wheel stood still, the vulture ceased to tear the giant's liver, the daightrs of Danaus rested from their task of drawing water in a sieve, and Sisyphus sat on his rock to listen." —Bulfinch, 1897

Tantalus, Sisyphus, and Ixion

"As he sang these tender strains, the very ghosts shed tears. Tantalus, in spite of his thirst, stopped…